Deleted File Recovery

How to Recover a Deleted OneNote Notebook from Copied Files

Huda QurayshiHuda Qurayshi Oct 15, 2026 869 views

Question details

The user needs to recover a deleted OneNote notebook because manually copied files between OneDrive accounts failed to function as a usable backup.

How to Recover a Deleted OneNote Notebook from Copied Files
Product
Microsoft OneNote
Device & OS
not provided
Scenario
Trying to access an old OneNote notebook using copied files after the original notebook was deleted months ago.
Observed behavior
The copied files cannot be opened as a functional notebook, and the original files are missing from the primary OneDrive account.
Before you start

Verify that you are logged into the exact Microsoft account originally associated with the notebook, as OneDrive syncs notebooks to specific user credentials.

Solution 1Recommended

Restore the Complete Notebook Folder from a System Backup

Use your computer's built-in backup utility (Time Machine for Mac or File History for Windows) to recover the intact notebook folder structure.

Manually copying OneNote files often breaks the synchronization metadata and the strict folder structure required for the notebook to function. Restoring a complete folder from a dedicated system backup is the most reliable method for recovery.

1
Connect your backup drive

Ensure the external hard drive used for your Mac Time Machine or Windows File History is connected to your computer.

2
Navigate to the backup date

Launch the backup utility and browse through your history to a date before the original OneNote notebook was deleted.

3
Restore the complete folder

Locate the entire folder containing your OneNote files (including the .onetoc2 index file and all .one section files) and restore it to its original location on your local drive.

4
Open the notebook in OneNote

Launch the OneNote desktop application, click on 'File', select 'Open', and navigate to the restored folder to access your recovered notes.

Restore the Complete Notebook Folder from a System Backup
Folder Structure Requirement: Do not attempt to open individual .one files directly if you want the full notebook experience. The entire folder with the index file (.onetoc2) is required.
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Frequently Asked Questions

Why can't I simply copy and paste OneNote files between OneDrive accounts?

Manually copying OneNote files (.one and .onetoc2) breaks the unique synchronization metadata required by OneDrive and the OneNote app. To move notebooks between accounts, they must be properly exported as a package and imported, or synced directly through the desktop application.

How long does OneDrive keep deleted notebooks in the recycle bin?

For personal Microsoft accounts, deleted items are typically retained in the OneDrive recycle bin for 30 days. For work or school accounts, the default retention period is usually 93 days, provided the recycle bin hasn't been emptied manually.

Can I extract text from a standalone .one file without the entire notebook structure?

Yes, if you only have individual .one section files, you can usually open them in the OneNote desktop application for Windows by double-clicking the file. However, you will lose the overarching notebook structure and any links between different sections.